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modulo helper

Tom Santiago
Updated

The modulo helper returns the remainder when dividing the first number (a) by the second (b). This is useful for performing arithmetic operations or creating repeating patterns in templates.

Usage

{{modulo a b}}

  • a (required): The dividend (number to divide)

  • b (required): The divisor (number to divide by)

Examples

Basic remainder calculation

{{modulo record.a record.b}}

Input:

{
  "record": {
    "a": 7,
    "b": 3
  }
}

Output:

1

Determine even or odd values

{{#if (eq (modulo record.value 2) 0)}}
  Even
{{else}}
  Odd
{{/if}}

Input:

{ "record": { "value": 9 } }

Output:

Odd

Use in a loop to create row groups

{{#each record.items}}
  {{#if (eq (modulo @index 3) 0)}}<hr>{{/if}}
  {{this}}
{{/each}}

Input:

{
  "record": {
    "items": ["A", "B", "C", "D", "E", "F"]
  }
}

Output:

A
B
C
<hr>
D
E
F
Tips

Tip

  • The helper performs arithmetic using JavaScript’s % operator.

  • Works best for grouping, alternating layouts, or computing sequence offsets.